What is the difference between AF_INET and PF_INET in socket programming?

Question

What is the difference between AF_INET and PF_INET in socket programming?

I\'m confused between using AF_INET and PF_INET in socket() and bind()

Answer 1

I found in Linux kernel source code that PF_INET and AF_INET are the same. The following code is from file include/linux/socket.h, line 204 of Linux kernel 3.2.21 tree.

/* Protocol families, same as address families. */
...
#define PF_INET     AF_INET